CN103330976A - Safe injector - Google Patents
Safe injector Download PDFInfo
- Publication number
- CN103330976A CN103330976A CN201310304412XA CN201310304412A CN103330976A CN 103330976 A CN103330976 A CN 103330976A CN 201310304412X A CN201310304412X A CN 201310304412XA CN 201310304412 A CN201310304412 A CN 201310304412A CN 103330976 A CN103330976 A CN 103330976A
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- Prior art keywords
- push rod
- syringe
- conehead
- connection tube
- injection needle
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- 238000003780 insertion Methods 0.000 claims description 3
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses a safe injector which relates to the technical field of medical instruments, and comprises a needle cylinder (1) and a push rod (3), as well as an injection needle (10) and a connecting tube (2), wherein the injection needle (10) can be replaced as per use requirements. According to the invention, when the safe injector is in use, the traditional operating custom is barely changed, the use is convenient, and the effect is reliable; the injection needle (10) can retract and hide through an automatic retraction mechanism after finishing injecting to ensure that medical staff can be free from the unexpected harm of a contaminated needlepoint; after the injection is completed, the push rod (3) cannot be pulled back as being clamped by clamping rings (1e), so that the push rod cannot be reused, the real disposable injector is realized, and further the cross transmission of blood-borne diseases is avoided; support sheets (1c) are adopted to support the connecting tube (2), and a conical head pulling back rod (3d) is sleeved with a compression spring (7) in a flat pressing annular manner, so that the structural design is more reasonable, the safe injector is more suitable for the automatic assembly production of a production line, the quality is reliable, the qualification rate is high, and the cost is reduced.
Description
Technical field
The present invention relates to technical field of medical instruments, relate to a kind of safety injector, particularly relate to a kind of disposable safety injector or a kind of disposable self-destroy safety injector.
Background technology
At present, promote the use of disposable syringe and played corresponding positive role to preventing cross infection, flashed past 30 years soon, later re-recognize true the summary, the problem that these disposable syringes exist: the disposable sterilized syringe of prior art---comprise the push rod formula of fractureing of pulling back, steel disc self locking and destructing formula, the manual haulback type of syringe needle, the disposable sterilized syringe that syringe needle relies on the spring tension automatic retracting type and adds various ways such as sleeve type---because the imperfection of product structure design, lack some essential reliable functions, make product can not satisfy fully the safe handling on needs.For example: 1. the disposable sterilized syringe of prior art, because product is with keeping intact substantially later, expose when needing back cover entry needle protective sleeve at entry needle, this process very easily makes medical personnel suffer the unexpected injury of exposed pollution needle point, especially infects infectious disease such as hepatitis B, acquired immune deficiency syndrome (AIDS) and can bring very big influence to medical worker's health; 2. though this product is named when formulating standard and is " disposable sterilized syringe ", but most syringes can not reach only expendable purpose on structure, and can both reuse greatly, " the disposable use " of just saying these products only is to get on to be strict with from management so to do, the repeating of disposable sterilized syringe repeatedly used and reclaimed usefulness again, causes the serious consequence of iatrogenic disease cross infection still to appear in the newspapers repeatly; 3. when using dry powder injection preparation liquid medicine injection, after in the medicine powder container, annotating solution, injection needle is owing to the influence that rubber stopper produces distortion or produces fineness and sharpness is crossed in puncture, from the strict sense, the entry needle that is used for puncture medicine bottle plug during preparating liquid must not be used further to human body is injected, and, have some countries to formulate " puncture medicine bottle plug can not be used further to this respect Compulsory Feature or rules that human body is injected during preparating liquid with the entry needle of mistake ".And the disposable sterilized syringe of prior art is said exchangeable needle though comprise self locking and destructing formula, the push rod formula of fractureing of manually pulling back, and syringe needle is with later can not be by hidden; (syringe adds a sleeve pipe outward in addition to add sleeve type, after injection uses with sleeve pipe to front slide, though make injection needle hidden, but doubling to consume material and increasing operational motion also is physical resources and human resources's significant wastage), syringe needle relies on the spring tension automatic retracting type, syringe needle relies on the automatic retractable safety injector of syringe needle of negative pressure retracting type etc. various ways, these several syringes are when the post processing of using later, its metal device (entry needle and compression spring and steel disc etc.) and working of plastics are difficult to do classification to be handled, causing major part after this series products uses all will enter incinerator burns and causes originally the recoverable material can not recycling, and, the large quantity of exhaust gas that produces after a large amount of plastic materials burns has aggravated the pollution to atmospheric environment, social life rubbish is also doing classification, available garbage recycling is got up, not only can reduce the rubbish total amount of 30-40%, can also save a large amount of physical resources for society.China is to use the big country of disposable sterilized syringe, its use amount is by at least ten hundred million calculating in every year, two is exactly more than 200 hundred million during the last ten years, calculate by every set level counterpoise 5 grams, be exactly 5000 tons that every year, two more than ten years were exactly more than 10 ten thousand tons, how much whole world is again is to have surpassed above-described these data widely certainly, and these shortcomings are because defective such as the safety inadequately of the structure of above-described various dissimilar disposable syringe or improving inadequately of shortcoming or structure are caused.
Summary of the invention
The present invention has overcome above-described various disposable sterilized injectors of the prior art and syringe needle can (comprise manually) shortcoming that exists in the safety injector of retraction automatically, provide a kind of or innovated a kind of this product ruined a kind of safety injector or a kind of disposable safety injector or a kind of disposable self-destroy safety injector voluntarily after using once of can guaranteeing on the structure of product itself, also we can say to the invention provides a kind of initiative disposible safety syringe that in the era development process syringe is updated that leads that has.For convenience's sake, all abbreviate as below: a kind of safety injector.
The objective of the invention is to adopt following technical solution to realize:
A kind of safety injector comprises syringe and push rod, and described push rod inserts its inner chamber from the syringe big opening end,
It is characterized in that:
Described push rod is a core structure, at described push rod top a bit of ejector sleeve is arranged vertically, the internal diameter of described ejector sleeve is littler than the internal diameter of push rod cylindrical shell, between push rod and ejector sleeve, form a bundle pitch plane, the pull back cydariform sealing ring tight fit sealing of bar of the ejector sleeve at described push rod top and conehead, described push rod outer wall arranges chuck;
Also comprise injection needle and be used for being connected the pull back connection tube of bar and injection needle of conehead;
Described connection tube is the middle tube that is through hole, the tubule head of connection tube and the through hole inner bottom part of injecting needle base extra heavy pipe end all are arranged to have outer conehead and the internal taper hole of identical tapering, the female thread that the tubule stage casing of connection tube is provided with in big mouthful with injecting needle base spins and the external screw thread that seals, this tubule is replaced with syringe osculum end inner plane mutually toward the thick part of lower process, the thick part of the central protrusion of connection tube has two anti-rotation ribs at least, toward being arranged with the circular groove that is nested with the O RunddichtringO, circular groove bundle joint down forms resistance and gives up the throne again;
Be provided with resistance with the adjacent position of anti-rotation rib of connection tube in the described syringe osculum end endoporus and ship and resell on another market, the resistance in the syringe endoporus is shipped and resell on another market and the anti-rotation rib of connection tube interdigitation in opposite directions;
Described injection needle comprises injection needle, injecting needle base, protective sleeve;
Described injecting needle base is the middle tubular body that is through hole, injection needle is adhesively fixed in the injecting needle base tubule end through hole, be configured to the female thread that the external screw thread with the tubule middle and lower part of connection tube or stage casing spins in the through hole of extra heavy pipe end, the arranged outside of injecting needle base tubule end has the spline rib;
Be provided with the interior back-off for the fixed support thin slice in the syringe; Described support slice is made of main ring and inner periphery net sheet, and the interior back-off of the main ring of support slice and syringe connects and fixes, and the inner periphery net sheet of this support slice supports on the resistance that is resisted against the thick section bundle of connection tube joint place gives up the throne;
Also comprise collar, the outside of described collar is provided with Shu Jie, is provided with the outer back-off for fixed card ring in the big opening end of syringe;
Also comprise the compression spring, described compression spring is made by metal material, and described compression ring spring is enclosed within described conehead and pulls back on the bar, and compression spring one end is resisted against conehead and pulls back on the transverse plane of bar, and the other end is resisted against on the bundle pitch plane of push rod inner chamber.
A kind of safety injector as previously discussed; it is characterized in that: described protective sleeve arranges resistance within it changes rib; in its appearance anti-skidding rib is set; described protective sleeve is enclosed within on the injecting needle base; resistance commentaries on classics rib in the protective sleeve and the spline rib of injecting needle base be interdigitation in opposite directions, and described injection needle is made with metal material.
Should be noted that:
When by dress or replacing injection needle; hand-held protective sleeve rotation; injecting needle base and connection tube spin; the anti-rotation rib of connection tube and the resistance in the syringe endoporus interdigitation in opposite directions of shipping and reselling on another market; simultaneously; the spline rib effect of interdigitation in opposite directions of rib and injecting needle base is changeed in resistance in the protective sleeve, makes injecting needle base and connection tube spin to cause tightly to seal.
A kind of safety injector as previously discussed, it is characterized in that: also comprise, make the pull back integral material of bar of described conehead and select elastomeric material for use, the described conehead bar of pulling back comprises: conical head, conehead neck, transverse plane and cydariform sealing ring, expose push rod pushing tow pipe when assembling with push rod and partly be configured to the conical head structure, described conical head is connected with integral body by the conehead neck, and the conehead neck down is arranged to the cydariform seal ring structure with the position that the ejector sleeve of push rod fixes.
A kind of safety injector as previously discussed is characterized in that: other end utilization grafting, clamping or other known connected modes of described push rod insertion syringe inner chamber arrange one and press hands.
A kind of safety injector as previously discussed is characterized in that: by hands central authorities one passage is being set.
Safety injector as previously discussed is characterized in that: at least 2 damping bars of the one side setting that is connected with push rod by hands.
A kind of safety injector as previously discussed is characterized in that: describedly at the another side that joins with push rod tread plate is set by hands.
A kind of safety injector of the present invention has following beneficial effect compared with prior art:
1. the present invention:
1) connection tube is designed to be resisted against syringe inner chamber osculum end, use O RunddichtringO and the syringe sealing of ring set on the circular groove of connection tube, on the resistance that the inner periphery net sheet of fixing support slice is resisted against the thick section bundle of connection tube joint place in the syringe is given up the throne, this moment anti-rotation rib of connection tube and resistance on syringe interdigitation in opposite directions of shipping and reselling on another market, connection tube exposes external screw thread on the thin end of syringe and the female thread of injecting needle base spins, because the combined effect of interdigitation in opposite directions between the spline rib of the resistance commentaries on classics rib of the effect of interdigitation and protective sleeve and injecting needle base in opposite directions between the anti-rotation rib of connection tube is shipped and resell on another market with the resistance in the syringe endoporus, hand-held protective sleeve rotation can tightly be threaded onto connection tube with injecting needle base and seal, and can not produce the situation of rotating simultaneously mutually; Convenience and reliability when injection needle is changed have been increased;
2) resistance that the inner periphery net sheet of fixing support slice is resisted against the thick section bundle of connection tube joint place in the syringe is given up the throne, anti-back safety when making acupuncture treatment is guaranteed, approach when finishing at injecting liquid drug, the ejector sleeve of push rod upper end upwards promotes, the inner periphery net sheet that ejector sleeve promotes to be resisted against the support slice that the place's resistance of the thick section bundle of connection tube joint gives up the throne to around expansion leave resistance and give up the throne, because the inner periphery net sheet of support slice adopts the base portion of network structure setting and inner periphery net sheet to adopt than thin structure, the ejector sleeve that moves up promotes the inner periphery net sheet of support slice and gives up the throne to expanding the resistance of easily leaving connection tube all around, causes whole operation steadily easily reliable;
3) will compress spring and press screen to be arranged on conehead in the push rod to pull back on the bar, and change more syringe and will press the compression ring spring of screen to be enclosed within way on the needle stand, and improve syringe and resisted power and the security of products that the entry needle acupuncture treatment bounces back;
2. do not change traditional operating habit when the present invention uses fully, easy-to-use, reliable effect, entry needle still can bounce back hidden by automatic cam mechanism automatically when injection was finished, guarantee that medical personnel avoid being polluted the unexpected injury of needle point, thereby brought the fabulous effect of the following stated:
1) saved a large amount of because polluting the medical expenses that needle point injury medical worker brings;
2) avoided medical personnel to injure the misery of the catch suffered human body and spirit because of needle point;
3) because the present invention:
(1) chuck in the push rod arranged outside is stuck when injection finishes by the collar that the outer back-off of syringe big opening end fixes;
(2) injection needle is injected the automatic retraction in the back that finishes and can't be repeated the assembling use, because supporting the structure setting of book sheet, the ejector sleeve on injection push rod top when finishing make the inner periphery net sheet that supports the book sheet to around can not set back after the expansion and can't repeat assembling and use, make used syringe can't reuse and realize the disposable use truly of this syringe from the structural design of this two aspect, thoroughly stopped, avoided to reuse syringe and the blood borne disease cross infection that causes;
(3) particularly will compress spring is arranged in the push rod, injection needle when injection finishes, injecting needle base, connection tube all is retracted in the push rod by the compression ring spring cover of diastole, especially contact the injection needle of patient's body fluid, injecting needle base, connection tube, conehead pull back bar and push rod, press hands, syringe, collar, protective sleeve is isolated safely by the compression spring of diastole, syringe uses post processing work later extremely simple, only press hands as long as simply open, metalwork (compression spring and injection needle) easily can be poured out from push rod, metalwork (injection needle and compression spring) can be separated rapidly with working of plastics, owing to use back injection needle retraction, the injection needle of contacted patient's body fluid, injecting needle base, connection tube is by the compression spring ring set of diastole, make a large amount of recyclings of working of plastics that safety guarantee arranged, reduced a large amount of burning amounts, also saved the burning cost because of a large amount of working of plasticss, these 2 aspects have shown that fully patent of the present invention has fabulous practicality, fabulous social benefit, excellent environment-protective benefit and excellent economic;
3. the originality of structural design of the present invention, connection tube is designed to be resisted against syringe inner chamber osculum end, use O RunddichtringO and the syringe sealing of ring set on the circular groove of connection tube, on the resistance that the inner periphery net sheet of the fixing support slice of back-off is resisted against the thick section bundle of connection tube joint place in utilizing in the syringe is given up the throne, make that resisting acupuncture treatment power has had guarantee, this moment anti-rotation rib of connection tube and resistance on syringe interdigitation in opposite directions of shipping and reselling on another market, connection tube exposes the external screw thread of thin end of syringe and the female thread of injecting needle base spins, because the spline rib of the commentaries on classics rib of the resistance in the protective sleeve and injecting needle base is interdigitation in opposite directions, hand-held protective sleeve rotation can be tightened in connection tube with injecting needle base, and can not produce together with rotating or revolving and not tight problem; Simultaneously big mouthful of intracavity bottom of the thin end of connection tube and injecting needle base arranges the outer conehead of identical tapering and internal taper hole and seals, and increased the convenience of operation and strengthened security reliability when entry needle is had an acupuncture treatment; Because a kind of safety injector structural design of the present invention gets rationally, and product assembling of the present invention also is enclosed within on the needle stand more simple and convenient than compressing ring spring, it is more convenient to make product assemble production line automatically, both improved output, guarantee product quality again, because the qualification rate of product improves, added the raising of output, the reduction of product cost, therefore, has excellent economic;
4. in sum, because a kind of safety injector of the present invention has good practicability and creativeness, has fabulous social benefit, excellent economic, therefore, this will be a kind of that be worth applying in the whole world, also very likely become a kind of initiative leading disposable safety injector truly or the disposable self-destroy safety injector that in the era development process syringe is updated or abbreviate safety injector as that have.
Description of drawings
Fig. 1 is the structure cutaway view of a kind of safety injector of the present invention;
Fig. 2 injects structure cutaway view when finishing moment for the present invention at medicinal liquid;
Fig. 3 finishes the automatic retracted state structure of injection needle cutaway view behind the injecting liquid drug for the present invention;
Fig. 4 is syringe structure for amplifying cutaway view of the present invention;
Fig. 5 is support book sheet structure for amplifying cutaway view of the present invention;
Fig. 6 is support book sheet structure for amplifying vertical view of the present invention;
Fig. 7 is collar structure for amplifying cutaway view of the present invention;
Fig. 8 is collar structure for amplifying vertical view of the present invention;
Fig. 9 is syringe of the present invention, supports the book sheet, the structure for amplifying cutaway view after the collar combination;
Figure 10 is the structure cutaway view of connection tube of the present invention;
Figure 11 is the structure upward view of connection tube of the present invention;
Figure 12 is the structure cutaway view of injecting needle base of the present invention;
Figure 13 is the structure vertical view of injecting needle base of the present invention;
Figure 14 is injection needle of the present invention and protective sleeve, injecting needle base combinative structure cutaway view;
Figure 15 is push rod of the present invention and piston, press hands structure cutaway view;
Figure 16 is the conehead of the present invention bar structure cutaway view of pulling back.
Among the figure:
1 syringe; The 1a resistance is shipped and resell on another market; Back-off in the 1b; The 1c support slice; The 1c1 main ring;
The outer back-off of 1c2 inner periphery net sheet 1d; The 1e collar; 1e1 restraints joint; 2 connection tubes;
The 2a external screw thread; 2b anti-rotation rib; The 2c circular groove; The 2d resistance is given up the throne; 2e connection tube through hole; 2f hole convex; The outer conehead of 2g; 3 push rods; The 3a ejector sleeve; 3b restraints pitch plane;
The 3c piston; The 3d conehead bar of pulling back; The 3d1 conical head; 3d2 conehead neck;
The 3d3 transverse plane; 3d4 cydariform sealing ring; The 3e chuck; 4 injecting needle bases; The 4a female thread;
4b needle stand through hole; 4c spline rib; The 4d internal taper hole; 5 press hands; 5a damping bar;
The 5b tread plate; The 5c passage; 60 RunddichtringOs; 7 compression springs; 8 protective sleeves;
Rib is changeed in the 8a resistance; The anti-skidding rib of 8b; 9 injection needles; 10 injection needles.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the present invention is made more detailed description.
Embodiment 1:
A kind of safety injector of the present invention as Fig. 1～shown in Figure 16, comprises syringe 1 and push rod 3, and described push rod 3 inserts its inner chamber from the big opening end of syringe 1,
It is characterized in that:
Described push rod 3 is a core structure, at described push rod 3 tops a bit of ejector sleeve 3a is arranged vertically, the internal diameter of described ejector sleeve 3a is littler than the internal diameter of push rod 3 cylindrical shells, the pull back cydariform sealing ring 3d4 tight fit of bar 3d of ejector sleeve 3a and the conehead that forms a bundle pitch plane 3b, described push rod 3 tops between push rod 3 and ejector sleeve 3a seals, and described push rod 3 outer walls arrange chuck 3e;
Also comprise connection tube 2 and injection needle 10;
Described injection needle 10 comprises: injecting needle base 4, injection needle 9 and protective sleeve 8;
Described connection tube 2 is the middle tube that is through hole, the tubule head of connection tube 2 and the through hole inner bottom part of injecting needle base extra heavy pipe end all are arranged to have outer conehead and the internal taper hole of identical tapering, the tubule stage casing of connection tube 2 is provided with 4 big mouthfuls of interior female thread 4a of injecting needle base and spins and the external screw thread 2a that seals, this tubule is replaced with syringe 1 osculum end inner plane mutually toward the thick part of lower process, the thick part of the central protrusion of connection tube 2 has two anti-rotation rib 2b at least, the resistance that arranges in the anti-rotation rib 2b of connection tube 2 and syringe 1 aperture 1a interdigitation in opposite directions of shipping and reselling on another market, stage casing down is provided with the circular groove 2c that is nested with O RunddichtringO 6 again, and circular groove 2c bundle joint down forms and hinders the 2d that gives up the throne;
Described injecting needle base 4 is a tubular body, and described injection needle 9 is bonded and fixed among the through hole 4b of injecting needle base 4 thin ends; The through hole 4b of described injecting needle base 4 is provided with female thread 4a in the big mouth of butt end, described injecting needle base 4 thin end arranged outside have the spline rib 4c of cross muscle shape; Be provided with the interior back-off 1b for fixed support thin slice 1c in the syringe 1;
Described support slice 1c is made of main ring 1c1 and inner periphery net sheet 1c2, this support slice 1c enters from the big opening end of described syringe 1, the main ring 1c1 of support slice 1c and described in back-off 1b connect and fix, the inner periphery net sheet 1c2 of this support slice 1c supports the resistance that is resisted against connection tube 2 thick section bundle joint places and gives up the throne on the 2d;
Also comprise compression spring 7, described compression spring 7 is to use metal material to make, described compression spring 7 pours into from the big mouth of push rod 3, the conehead bar 3d that pulls back also mouthful pours into from the big of push rod 3, directly be pushed into the pull back ejector sleeve 3a tight fit sealing and fixing of cydariform sealing ring 3d4 and push rod 3 of bar 3d of conehead, at this moment compression spring 7 is pressed screen to be sleeved on conehead and is pulled back on the bar 3d, compression spring 7 one ends are replaced on conehead is pulled back the transverse plane 3d3 of bar 3d, and the other end is replaced on the bundle pitch plane 3b of push rod 3;
Also comprise collar 1e, described collar 1e connects and fixes by the outer back-off 1d of the big opening end of syringe 1, and the arranged outside of described collar 1e has bundle joint 1e1, and the outer back-off 1d structure of fixed card ring 1e is set in the big opening end of syringe.(it is prior art that the front end suit one piston 3c of push rod 3 seals, and does not elaborate at this).
When using, the present invention do not change traditional operating habit fully; inject when the medicinal liquid in the syringe 1 and will inject when finishing; the pull back conical head 3d1 contact connection tube 2 at bar 3d top of conehead in the masthead ejector sleeve 3a endoporus of push rod 3; when push rod 3 continues to advance; the pull back conical head 3d1 at bar 3d top of conehead makes a forcible entry into the hole convex 2f the inside of the connection tube through hole 2e big opening end of connection tube 2; hole convex 2f blocks pull back conehead neck 3d2 under the conical head 3d1 at bar 3d top of conehead; when push rod 3 continues to advance; the pull back cydariform sealing ring 3d4 of bar 3d of conehead moves down; the ejector sleeve 3a of push rod 3 mastheads reveals to the inner periphery net sheet 1c2 of the contact support slice 1c that rises; the ejector sleeve 3a of push rod 3 mastheads is because the continuation propelling of push rod 3; medicinal liquid is injected when finishing; ejector sleeve 3a expands outwardly the inner periphery net sheet 1c2 of support slice 1c and causes resistance that inner periphery net sheet 1c2 leaves connection tube 2 2d that gives up the throne; conehead pull back bar 3d gradually the inner chamber of connected tube 2 top shift-in push rods 3 cause the pull back cydariform sealing ring 3d4 of bar 3d of conehead to break away from the position, tight card division of the ejector sleeve 3a at push rod 3 tops; conehead is pulled back bar 3d under the effect of compression spring 7 diastole power; conehead is pulled back injecting needle base 4 that bar 3d connects by connection tube 2 and injection needle 9 simultaneously from the inner chamber resilience of trend push rod 3; the diastole power of compression spring 7 of design should be enough to make injection needle 9 speed away human injection position and whole retraction automatically; fall into intracavity end injection in the push rod 3; injection needle 9 is retracted to the inside of syringe fully and is hidden; therefore; after finishing injection, need not return cover protective sleeve 8; when injecting liquid drug finishes; push rod 3 is also shifted the bottom of syringe 1 simultaneously onto; at this moment the chuck 3e of push rod 3 also crosses the collar 1e on the outer back-off 1d that is arranged on syringe 1 big opening end simultaneously; after finishing injection; push rod 3 can't pumpback because of the chuck 3e that blocked push rod 3 by collar 1e; this structure has great benefit: the injury from sharp utensil evil of medical personnel and the post processing personnel needle point definitely having avoided suffering contaminated on the one hand; syringe products structure of the present invention itself makes that used syringe can not be by the repeated use that re-assemblies and stopped this safety injector product on the other hand, guaranteed a kind of safety injector of the present invention reached truly disposable use and the purpose of self-destruction.
Present embodiment is similar substantially to embodiment 1, and shown in Fig. 1-16, difference is:
A kind of safety injector of present embodiment; the surfaces externally and internally that also comprises protective sleeve 8 is provided with resistance commentaries on classics rib 8a and anti-skidding rib 8b; protective sleeve 8 covers are inserted on the injecting needle base 4; injection needle 9 is shielded; the resistance commentaries on classics rib 8a of protective sleeve 8 inner surfacies and the spline rib 4c on the injecting needle base 4 be interdigitation in opposite directions; screwing and spinning when changing injection needle 10 before being convenient to inject, the anti-skidding rib 8b of protective sleeve 8 outer surfaces is convenient to grip, and described injection needle is to use metal material to make.
Any is similar basically in present embodiment and embodiment 1 or 2, and shown in Fig. 1-16, its difference is:
Also comprise, make the pull back integral material of bar 3d of described conehead and select elastomeric material for use, the described conehead bar 3d that pulls back comprises: conical head 3d1, conehead neck 3d2, transverse plane 3d3 and cydariform sealing ring 3d4, expose push rod 3 masthead ejector sleeve 3a during with push rod 3 assemblings and partly be designed to conical head 3d1 structure, described conical head 3d1 is connected with integral body by conehead neck 3d2, and conehead neck 3d2 down is arranged to cydariform sealing ring 3d4 structure with the position that push rod 3 ejector sleeve 3a fix.
Present embodiment is similar basically to embodiment 3, and shown in Fig. 1-16, difference is:
Present embodiment also is included in other end utilization grafting, clamping or other known connected modes of push rod 3 insertion syringes 1 and presses hands 5 by putting one.
Present embodiment is similar basically to embodiment 4, and shown in Fig. 1-16, difference is:
Present embodiment comprises that also push rod 3 is to by a passage 5c is set between the hands 5; Present embodiment push rod 3 can prevent product when standing to need negative pressure to vacuum to sterilize to a passage 5c is set by hands 5, makes the pull back inside and outside air pressure balance of bar 3d of conehead, does not cause conehead to pull back bar 3d because of the negative pressure displacement.
Present embodiment is similar substantially to embodiment 5, and shown in Fig. 1-16, difference is:
This presses hands 5 at least two damping bars of the one side setting 5a that contacts with push rod 3, and this damping bar 5a plays cushioning effect preferably when pulling back bar 3d resilience for conehead, more feels light when particularly allowing medical personnel operate.
Present embodiment is similar basically to embodiment 6, and shown in Fig. 1-16, difference is:
Present embodiment also comprises and describedly at the another side that joins with push rod tread plate 5b is set by hands.
Should be noted that above embodiment just is used for the present invention is done further explanation; not that claim of the present invention is limited; under the situation that does not break away from spirit of the present invention and design; those of ordinary skills can carry out various improvement or variation, still belong to the protection domain of requirement of the present invention.
Claims (7)
1. a safety injector comprises syringe (1) and push rod (3), and described push rod (3) inserts its inner chamber from syringe (1) big opening end,
It is characterized in that:
Described push rod (3) is a core structure, at described push rod (3) top a bit of ejector sleeve (3a) is arranged vertically, the internal diameter of described ejector sleeve (3a) is littler than the internal diameter of push rod (3) cylindrical shell, between push rod (3) and ejector sleeve (3a), form a bundle pitch plane (3b), pull back cydariform sealing ring (3d4) the tight fit sealing of bar (3d) of the ejector sleeve 3a of the masthead of described push rod (3) and conehead, described push rod (3) outer wall arranges chuck (3e);
Also comprise for connecting conehead pull back connection tube (2) and the injection needle (10) of bar (3d) and injection needle (10);
Described connection tube (2) is the middle tube that is through hole, the tubule head of connection tube (2) and the through hole inner bottom part of injecting needle base extra heavy pipe end all are arranged to have outer conehead and the internal taper hole of identical tapering, the tubule stage casing of connection tube (2) is provided with big mouthful of interior female thread (4a) of injecting needle base (4) and spins and the external screw thread that seals (2a), this tubule is replaced with syringe (1) osculum end inner plane mutually toward the thick part of lower process, the thick part of central protrusion of connection tube (2) has two anti-rotation ribs (2b) at least, toward being arranged with the circular groove (2c) that is nested with O RunddichtringO (6), circular groove (2c) bundle joint down forms and hinders give up the throne (2d) again;
Be provided with resistance with anti-rotation rib (2b) connecting part of connection tube (2) in described syringe (1) the osculum end endoporus and ship and resell on another market (1a), ship and resell on another market anti-rotation rib (2b) interdigitation in opposite directions of (1a) and connection tube (2) of the resistance in syringe (1) aperture;
Described injection needle (10): comprise injection needle (9), injecting needle base (4), protective sleeve (8);
Described injecting needle base (4) is a tubular body, injection needle (9) is adhesively fixed in injecting needle base (4) the tubule end through hole, be configured to the female thread (4a) that the external screw thread (2a) with the tubule middle and lower part of connection tube (2) spins in the through hole of extra heavy pipe end, the arranged outside of injecting needle base (4) tubule end has spline rib (4c);
Be provided with the interior back-off (1b) for fixed support thin slice (1c) in the described syringe (1), this support slice (1c) is made of main ring (1c1) and inner periphery net sheet (1c2), the main ring (1c1) of this support slice (1c) with described in back-off (1b) connect and fix, the inner periphery net sheet (1c2) of this support slice (1c) supports the resistance that is resisted against the thick section bundle of connection tube (2) joint place and gives up the throne on (2d);
Also comprise collar (1e), the outside of described collar (1e) is provided with Shu Jie (1e1), is provided with the outer back-off (1d) of fixed card ring (1e) in the big opening end of syringe;
Also comprise compression spring (7), described compression spring (7) is made by metal material, described compression spring (7) ring set is on conehead is pulled back bar (3d), compression spring (7) one ends are resisted against conehead and pull back on the transverse plane (3d3) of bar (3d), and the other end is resisted against on the bundle pitch plane (3b) of push rod (3) inner chamber.
2. a kind of safety injector according to claim 1,
It is characterized in that: described protective sleeve (8) arranges resistance within it changes rib (8a), in its appearance anti-skidding rib (8b) is set; Protective sleeve (8) quilt cover is inserted on the injecting needle base (4), and the resistance commentaries on classics rib (8a) in the protective sleeve (8) and the spline rib (4c) of injecting needle base (4) be interdigitation in opposite directions, and described injection needle (9) is to use metal material to make.
3. as any described a kind of safety injector in claim 1 or 2,
It is characterized in that: also comprise, make the pull back integral material of bar (3d) of described conehead and select elastomeric material for use, the described conehead bar (3d) of pulling back comprising: conical head (3d1), conehead neck (3d2), transverse plane (3d3) and cydariform sealing ring (3d4), expose push rod (3) masthead ejector sleeve (3a) when assembling with push rod (3) and partly be configured to conical head (3d1) structure, described conical head (3d1) is connected with integral body by conehead neck (3d2), and conehead neck (3d2) down is arranged to cydariform sealing ring (3d4) structure with the position that the ejector sleeve (3a) of push rod (3) fixes.
4. a kind of safety injector as claimed in claim 3,
It is characterized in that: comprise also and press hands (5) that described other end utilization grafting, clamping or other known connected modes by hands (5) and push rod (3) insertion syringe (1) inner chamber fixed.
5. a kind of safety injector as claimed in claim 4,
It is characterized in that:
By hands (5) central authorities one passage (5c) is set described.
6. a kind of safety injector as claimed in claim 5,
It is characterized in that: described one side of joining by hands (5) and push rod (3), and/or at least 2 the damping bars (5a) of setting on every side of passage (5c).
7. as a kind of safety injector as described in the claim 6,
It is characterized in that the described another side that joins by hands (5) and push rod (3) arranges tread plate (5b).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310304412.XA CN103330976B (en) | 2013-07-18 | 2013-07-18 | Safe injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310304412.XA CN103330976B (en) | 2013-07-18 | 2013-07-18 | Safe injector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103330976A true CN103330976A (en) | 2013-10-02 |
| CN103330976B CN103330976B (en) | 2015-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310304412.XA Expired - Fee Related CN103330976B (en) | 2013-07-18 | 2013-07-18 | Safe injector |
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| Country | Link |
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| CN (1) | CN103330976B (en) |
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| CN107206188A (en) * | 2015-02-19 | 2017-09-26 | 亚历山大李 | dental syringe with detachable needle stabilizer |
| CN108815639A (en) * | 2018-05-08 | 2018-11-16 | 河南兴恒医疗用品有限公司 | Disposible safety syringe |
| CN110025850A (en) * | 2019-05-07 | 2019-07-19 | 中国人民解放军第四军医大学 | A kind of pre-filled flushing syringe |
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| DE202016103246U1 (en) | 2016-06-20 | 2016-06-28 | Jianyu Jia | A retractable safe syringe that is readable and triggerable |
| US9999733B2 (en) | 2016-07-26 | 2018-06-19 | Jian-Yu JIA | Safety syringe |
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| CN201220020Y (en) * | 2008-04-28 | 2009-04-15 | 林作钱 | Improved injection syringe with slowly retracted needle head |
| CN101480511A (en) * | 2009-02-08 | 2009-07-15 | 徐昊华 | Disposable safety syringe with syringe needle capable of automatically retracting |
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| CN107206188B (en) * | 2015-02-19 | 2020-10-16 | 亚历山大李 | Dental syringe with detachable needle stabilizer |
| CN108815639A (en) * | 2018-05-08 | 2018-11-16 | 河南兴恒医疗用品有限公司 | Disposible safety syringe |
| CN110025850A (en) * | 2019-05-07 | 2019-07-19 | 中国人民解放军第四军医大学 | A kind of pre-filled flushing syringe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103330976B (en) | 2015-05-13 |
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Effective date of registration: 20190807 Address after: 223600 North Building, Gaochuangyuan Training Building, Shuyang County, Suqian City, Jiangsu Province Patentee after: Jiangsu Futian HANACO medical instrument limited company Address before: Room 2301, No. 58 Shengshi Home, Beitang District, Wuxi City, Jiangsu Province Patentee before: Xu Haohua |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20150513 Termination date: 20200718 |